Window or door stop



Apr. 10, 19231 F; ARMBROSTER WINDOW OR boo'R STOP Filed Apr. 15, 1921 avwomtoz FArm broster T 6 all whom it may concern:

Patented Apr. 10, 1923.

UNIT D s'rA'rEs FREDERICK ARMBROSTER, OF AVERNE, NEW YORK.

WINDOW OR DOOR STOP.

Application filed April 13, 1921. Serial No. 460,939.

Be it known that I, FREDERICK ARMBRos- TER, a citizenof the United States, and resident of 63-14 Boulevard, Averne, in the county of Queensand State of New York,

have invented certain new and useful Improvements in Window or Door Stops, of

which the following is a specification.

This invention relates to improvements in window or door stops.

An object of this invention is to provide an economical, efficient and effective window or door stop, simple .in construction, and adapted to be used for preventing a window or door from beingstealthily opened or to keep a door in any desirable open position or preventingsame from closing when in openposition.

Another object of this invention is to provide a stop of the'character stated above and wherein a metallic wedge-shaped bearing member is sunk within a deeply grooved non-metallicwedge-shaped body, said bearing member being provided with a tapered knife-edge pin protruding outwardly from the bottom of said body nearest that portion of the stop having the greatest height, the latter pin being adapted to be sunk into the wooden frame of a window or a floor.

The above and further objects in view will more fully be understood from the following description together with the accompanying drawings forming part of this specification and in which: i I

Figure 1 illustrates how the device may be applied as a window stop.

Figure 2 illustrates how the device may be applied as .a door stop. v

Figure 8 illustrates a longitudinal sectional view ofthe device.

Figure 4 illustrates a bottom view of the same w I Figure illustrates a modified form of the device.

In the drawings there is disclosed a wedge-shaped wooden body 11 having a fiat bottom or base 12, said body being of the same width throughout.

The upper or bearing surface 13 of body 11 has a maximum height at the point indicated by the numeral 14 from which point bearing surface 13 declines relative to base 12 until it meets the latter so as to form a dull edge 15.

End 16 of body 11 is made perpendieular wooden frame or floor bearing member 20 is to base 12, thecorner joining said end with bearing surface 13 being rounded off as indicated by the numeral 17.

Within body 11 there is formed afnar-.

row, deep groove indicated by the dotted lines at 18. (See Figure 4;.) 1 This groove has its walls formed perpendicular to basell and equidistant from the -inclined sides 19 of body 11 and is located equidistant from the latters end 16 and edge 15. The bottom of the groove ismade parallel withbase 12 I i Tightly fitting into this groove, is a wedge-shaped bearing member 20 conforming to'the shape of the groove. The'inclined surface of bearing member 20 is flush with the bearing surface 13 of bodyll. This bearing member is'pr'ovided with a tapered knife-edge projection or pin 21,,

made integral therewith, and; protruding outwardly from base 12 of body 11 nearest that, portionof the stop having the greatest height. Projection 21 is so disposed without body 11, that its kn fe-edge'is parallel with and equidistant from, thejinclined sides '19 of said body. Its shape and disposition is such that when it is caused to be sunk w thin a it leavesbut asmall perforation. F

Body 11 may be provided with a vertical perforation to accommodate pin 21 or the pin may be forced through the body when caused to fit into its groove, by suitable means. Bearing member 20 with its knife-edge projection 21 is'made preferably from steel or any other; suitable hardened metal; purpose of this bearing member is to pro- The vide a hardened contact surface adapted to resist pressure applied tothestopat its inclined surface the shape of; thismember being such that'the greater the applied pres sure the greater the tenacity or unyieldingness of knife-edge pin or projection 21 when in contact with the window frame or floor.

Figure 5 shows the stop in a modified form. Instead of knife-edge projection 21 being made integral with hearing member 20, it is made a separate'element in the form of a pin 22., Q

When the stop is constructed according to this modified form it is preferable to have pin 22 shaped so'as to form tapered edges I at both ends,- the inner and engaging the prevent a door from being opened. ilarly to that stated above, the door will body 11, the outer end adapted to engage the floor or window in the manner described below.

The stop described above is adapted to be used for preventing a window or a doorfrom being stealthily opened. Figure 1 shows how the stop is applied to prevent windows from being opened. The stop is secured to the frame of the upper window with its tapered edge facing down, the knife-edge projection or pin 21-beingsunk withinsaid frame. On account of the shape and disposition of said projection 21, but a small perforation ismade within the frame, which perforation wiH always mark the place at which the stop is to be replaced when desired.

' iIf an attempt is made to raise the bottom or lower the'top window the stop will in- ,tercede and prevent said opening. vOf course .one of the windows will open slightly at the bottom or top depending upon whether theattempt is made tolower the top window .or raise thebottom one, on account of the ,a-rnount ofplay between the windows. For this reason itis not necessary to havethe surface of bearing member come down ,tothe extreme lower end of the stop. I

Figure 2 shows how the stop is appliedto Simopen slightly and'ifan attempt-is made to force the door beyond that point, the latter will bear against the inclined surface of the stop thereby exerting a substantially vertical pressureuponbearing member 20 which i t trengthens the unyieldingness of its projectionv 21.

Having thus described my invention and reserving for myself the right to make algterations and amendments within the pur- ,view. of my idea, I claim.

1. A window or door stop comprising in combination a -.wedge-shapedbody, a wedgeshapecl bearing member tightly fitted within .body, saidbearing member being provided with a knife-edgepin made integral.

therewith and protruding outwardly fr m .the bottom of said body, substantially a cribed.

211} Window or door stop comprising in COIIIbIIIatIOII. alwedgeshaped body, a wedge "shaped bearing member provided with a knife-edge pin protruding outwardly from the bottom of said body, said Wedge-shaped body-having formed therein a groove to conform with the shape of said bearing member, substantially as described.

3. As a new article of manufacture a win dow or door stop comprising in combination a wedge-shaped body having inclined sides ,and provided with a groove, a wedge-shaped bearing member provided with a knife-edge pin, adapted to fit into said groove, said pin being protruded outwardly at a right angle to the base of said body in such manner that its knife-edge is parallel with and equidistant from the inclined sides of said body,

substantially as described.

4. As a new article of manufacture a window ordoor lock comprising in combina- ,tion a wedge-shaped body having inclined sides and provided with a groove, said groove having its walls formed perpendicular to the base of said body and equidistant from the inclined sides of the latter, a wedge-shaped bearing member provided with a knife-edge pin, adapted to fit into said groove, said pin being protruded outwardly. ata right angle to thebase of said body in such manner that its knife-edge is parallel with and equidistant .fromthe inclined sides of said body, substantially as described.

withand equidistant from the 'inclinedsides of said body, substantially as described.

Signed at New York, in the county of New York and State of New York this 26 day of March, A. D. 1921.

FREDERICK ARMBROSTER. 

